Hi, Richard. Call a chimney sweep that's listed in the phone book. This takes special tools that are not generally available to do it right. A good chimney sweep will know a lot of things to look for when doing your chimney that can save to from a lot of problems down the road. He can help you keep your chinmey safe and efficient. But beware of some guy walking up to your door that wants to clean your chimney, furnace or ducts. Find somebody that has been in business in your local area for some time.